Diligence

is that energy and industry which we show when we do what we like
(Latin, diligo, I like); but indolence is that listless manner
with which we do what thoroughly vexes us. (Latin, in,
intensive; dolco, to grieve.)

Diligence

A four-wheeled stage-coach, drawn by four or more horses.
Common in France before the introduction of railroads. The pun is well
known.